import axios from 'axios'
// axios：用于发起 HTTP 请求的库。
import { MessageBox, Message } from 'element-ui'
// MessageBox, Message：来自 element-ui 的弹框和消息提示组件，用于展示用户交互消息。
import store from '@/store'
// store：Vuex 的 store 实例，用于访问全局状态管理。
// import { getToken,setToken } from '@/utils/auth'
// getToken：从 auth 工具中导入的函数，用于获取当前存储在浏览器中的用户认证 token。

// create an axios instance  创建 Axios 实例
const service = axios.create({
  baseURL: process.env.VUE_APP_LOCAL_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    // console.log(config)
    if (config.data) {
      config.data.userid = store.getters.userid
    }
    if (store.getters.jwt) {
      config.headers['token'] = store.getters.jwt
    }
    console.log(config, config.method)
    if (store.getters.stateToken) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      // config.headers['X-Token'] = getToken()
      config.headers['tokenUserId'] = store.getters.stateToken.userid
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    console.log('为了重置token', response)
    console.log('token', response.headers)
    console.log('token3', response.headers['Token'])
    const res = response.data
    // console.log(res)
    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 200) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          console.log('requestcore重置token', error)
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      if (res.message === 'token过期' || res.message === 'token无效') {
        Message({
          message: res.message || 'Error',
          type: 'error',
          duration: 5 * 1000
        })
        location.reload()// 重新加载
      } else {
        if (response.headers['Token']) {
          store.dispatch('user/setJWT', response.headers['Token'])// 设置新的jwt
        }
        return res
      }
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
